Elastic gas washout vent for a respiratory mask

ABSTRACT

The present invention relates to a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal&#39;s airways. The system comprises a mask (10), a rim (28) bounding an opening (26), and a vent assembly (20) for gas washout. The vent assembly is configured to be retained in the opening. At least one of the vent assembly and a region surrounding the opening has a flexibility allowing the vent assembly to be squeezed through the opening before engaging the rim.

FIG. 1 is a perspective view of an elastic gas washout vent for a respiratory mask showing our new design; and,

FIG. 2 is an enlarged, plan view thereof.

Where included, broken lines showing environment or structure are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an “elastic gas washout vent for a respiratory mask”, as shown and described. 